发明授权
- 专利标题： Air/fuel ratio control system for internal combustion engine
- 专利标题（中）： 内燃机空燃比控制系统
-
申请号： US544598申请日： 1990-06-27
-
公开(公告)号： US5095878A公开(公告)日： 1992-03-17
- 发明人: Shiro Kumagai , Katsuo Akishino , Reijiro Komagome , Michiyasu Yoshida , Tateo Kume , Masaki Nishizawa , Seiji Ishida , Takehisa Fujita
- 申请人： Shiro Kumagai , Katsuo Akishino , Reijiro Komagome , Michiyasu Yoshida , Tateo Kume , Masaki Nishizawa , Seiji Ishida , Takehisa Fujita
- 申请人地址： JPX Tokyo
- 专利权人： Mitsubishi Jidosha Kogyo Kabushiki Kaisha
- 当前专利权人： Mitsubishi Jidosha Kogyo Kabushiki Kaisha
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX1-166342 19890627
- 主分类号： F02D41/14
- IPC分类号： F02D41/14
摘要：
An air/fuel ratio control system is provided for use with an internal combustion engine. The system includes a first air/fuel ratio detector arranged on an upstream side of a catalytic converter so as to detect the air/fuel ratio of the engine from components of exhaust gas, a second air/fuel ratio detector arranged in the exhaust system and having a detection response speed slower than the first air/fuel ratio detector, a device for controlling the air/fuel ratio of the engine on the basis of results of a comparison between a detection value from the first air/fuel ratio detector and a predetermined first reference value, a device for effecting a correction to the control of the air/fuel ratio by the air/fuel ratio control device on the basis of results of a comparison between a detection value from the second air/fuel ratio detector and a predetermined second reference value, and a device for shifting the second reference value to a lean air/fuel ratio side in a specific operation state of the engine.